关键词: 产品设计, 知识推送, 特征语义, 数控机床, 设计知识

Abstract: Inefficiency of knowledge acquisition has become a key factor restricting of improving the design quality and shortening the design cycle of CNC machine tools.In CNC design knowledge push process driven by design procedure,aiming at the design knowledge demand difference of different designers,an intelligent push method of CNC design knowledge based on latent semantic analysis was proposed.A semantic matrix of description words and design knowledge with nonlinear weight coefficient was developed,and the semantic matrix was mapped to a low-dimensional space by singular value decomposition.The requirements of design knowledge were extracted from the model of design process and the fitness value was evaluated.According to the designers'personal interests,the filtering rules were created and the push solution of design knowledge was filtered.A case study was provided to illustrate the practical application of the proposed method.

Key words: product design, knowledge push, feature semantic, machine tools, design knowledge